Equipment
* optional
Ingredients
Tostada Shells
- 4 corn tortillas, 15cm diameter
- 10 ml vegetable oil
- 2 g fine sea salt
Spiced Refried Black Beans
- 15 ml olive oil
- 50 g white onion, finely diced
- 6 g garlic, minced
- 2 g ground cumin
- 400 g canned black beans, rinsed and drained
- 60 ml vegetable broth
Toppings
- 150 g hass avocado, sliced
- 15 ml lime juice, freshly squeezed
- 40 g pickled red onions, drained
- 20 g pickled jalapeños, sliced
- 50 g queso fresco, crumbled
- 5 g fresh cilantro, roughly chopped
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 312 kcal
- Protein
- 10 g
- Carbohydrates
- 34 g
- Fat
- 17 g
- Fiber
- 12 g
- Sugar
- 5 g
- Sodium
- 1483 mg
- Saturated Fat
- 4 g
- Trans Fat
- 0 g
- Monounsaturated Fat
- 8 g
- Polyunsaturated Fat
- 2 g
- Cholesterol
- 9 mg
- Potassium
- 561 mg
- Calcium
- 146 mg
- Iron
- 2.6 mg
- Magnesium
- 70 mg
- Phosphorus
- 231 mg
- Zinc
- 2.1 mg
- Vitamin A
- 85 mcg
- Vitamin C
- 7 mg
- Vitamin D
- 0.3 mcg
- Vitamin E
- 1.9 mg
- Vitamin K
- 13 mcg
- Vitamin B6
- 0.3 mg
- Vitamin B12
- 0.2 mcg
- Thiamin
- 0.11 mg
- Riboflavin
- 0.14 mg
- Niacin
- 1.5 mg
- Folate
- 102 mcg
- Water
- 155 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat your oven to 200°C/400°F. Line a large baking sheet with parchment paper to prevent the tortillas from sticking.
Brush the corn tortillas lightly with vegetable oil on both sides using a pastry brush. Arrange them in a single layer on the prepared baking sheet and sprinkle evenly with fine sea salt.
Bake the tortillas for 5 minutes at 200°C/400°F. Carefully flip each tortilla and bake for an additional 5 to 7 minutes, until they are golden brown and fully rigid.
Meanwhile, heat the olive oil in a skillet over medium heat. Add the finely diced white onion and cook until softened, about 4 minutes. Stir in the minced garlic and ground cumin, cooking for 1 additional minute until fragrant.
Add the rinsed black beans and vegetable broth to the skillet. Reduce heat to medium-low and simmer, actively mashing the beans with a wooden spoon or potato masher for 5 minutes until the mixture forms a thick, spreadable paste.
Chop the avocado into even slices. Toss the slices gently in a small bowl with the freshly squeezed lime juice to season them and prevent browning.
Assemble the tostadas by spreading a generous, even layer of the warm mashed black beans across the surface of each crispy baked tortilla shell.
Garnish each tostada with the lime-tossed avocado slices, drained pickled red onions, sliced pickled jalapeños, crumbled queso fresco, and fresh cilantro. Serve immediately.
Chef's Notes
- Baking corn tortillas instead of frying them yields a surprisingly robust crunch without the greasy finish or heavy calorie load, perfect for sturdy tostadas.
- Mashing half the black beans while leaving the rest whole creates a superior textural contrast in the refried bean base compared to a perfectly smooth puree.
- Tossing the avocado slices in fresh lime juice not only prevents oxidation but also adds a necessary hit of acid that cuts through the richness of the beans and cheese.
- If your tortillas are exceptionally fresh and moist, you may need to extend the baking time by 2-3 minutes to achieve the proper snap.
Storage
Refrigerator: 3 days — Store toppings, beans, and shells in separate airtight containers; assembled tostadas will become irreparably soggy.
Freezer: 1 month — Only the black beans freeze well. Shells and fresh toppings should not be frozen.
Reheating: Reheat beans in a skillet or microwave until hot. Warm leftover shells in a 180C oven for 3 minutes to recrisp.
Troubleshooting
Tostada shells are chewy instead of crispy
Cause: Tortillas were underbaked or overloaded with oil
Fix: Before adding toppings, return the plain shells to the oven for 2-3 minutes at 200°C/400°F.
Prevention: Brush oil very lightly and ensure shells are baked until completely rigid. Allow them to cool slightly outside the oven to finalize crisping.
Refried beans are too dry and crumbly
Cause: Too much liquid evaporated during the simmering and mashing phase
Fix: Stir in an additional 15-30ml of vegetable broth or water until the desired spreadable consistency is reached.
Prevention: Mash the beans while retaining a gentle simmer, rather than a rapid boil.
Cultural Context
Tostadas originated in Mexico as a practical, delicious method to extend the life of stale tortillas by toasting or frying them until crisp. They serve as a sturdy, edible canvas for a variety of regional toppings, from simple beans and cheese to fresh ceviche. This modern, baked iteration honors the traditional layered textures while providing a lighter, weeknight-friendly approach to the classic street food.
